docstr: Returns a given response header.
docstr_tok: ["Returns","a","given","response","header","."]
code: def getheader(self, name, default=None):
      """Returns a given response header."""
      return self.urllib3_response.getheader(name, default)
  
imports: from __future__ import absolute_import
  import io
  import json
  import logging
  import re
  import ssl
  import certifi
  import six
  from six.moves.urllib.parse import urlencode
label_desc: Use image node_id 3 for calling the RESTResponse obj's underlying member method code with example usage: obj.getheader(name, default) and returns: self